Uber users in Denver will soon have the ability to contact 911 through the ride-sharing service's app. The company announced the pilot program yesterday, which is a partnership with the RapidSOS service. Uber says the new feature is the result of requests from both riders and drivers. It's also part of safety changes coming to the service in the near future, including beefed up background checks for drivers. The 911 pilot program is expected to start this summer